In today's image, we see a region of Mars including a hole where a meteor may have punched a hole through the Martian surface and into some caverns below. If this is correct, it may mean there is the possibility of some simple martian life in the caverns, shielded from the ultraviolet light of the Sun which sterilizes the surface.

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This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

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